/**
*      author: Y_Yao
*      created: 2024-11-22 19:51:31
**/

#include<bits/stdc++.h>

using namespace std;
using LL = long long;
const LL LLINF = 1e18;
const int INF = 0x3f3f3f3f;

void solve()
{
    string s;
    int n;
    cin >> n;
    cin >> s;
    string t = " ";
    s = t + s;

    if(n % 2 != 1)
    {
        cout << "No" << endl;
        return;
    }
    for(int i = 1;i <= n;i++)
    {
        if(i < (n + 1) / 2)
        {
            if(s[i] != '1')
            {
                cout << "No" << endl;
                return;
            }
        }
        else if(i == (n + 1) / 2)
        {
            if(s[i] != '/')
            {
                cout << "No" << endl;
                return;
            }
        }
        else
        {
            if(s[i] != '2')
            {
                cout << "No" << endl;
                return;
            }
        }
    }
    cout << "Yes" << endl;
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);

    int t = 1;
    //cin >> t;
    while(t--)
    {
        solve();
    }
    return 0;
}